Hi, I'm currently ranking no.6 for my keyword on google.co.uk, so I decided to check the top 5's backlinks to see what they do. All 5 have at least 75% of their backlinks from directories, with one site having 95% of its links from the same directory just under different categories?! (1,000+ backlinks). I checked the PR of the site and it's only PR 2. Are directory links really this powerful, or is it a case of quantity out-does quality in this case? Thanks.